module CfnDsl::Functions
These functions are available anywhere inside a block for a JSONable
object.
Constants
- FN_SUB_SCANNER
-
Equivalent to the
CloudFormation
template built in function Fn::Sub
Public Instance Methods
Source
# File lib/cfndsl/jsonable.rb, line 47 def FnAnd(array) raise 'The array passed to Fn::And must have at least 2 elements and no more than 10' if !array || array.count < 2 || array.count > 10 Fn.new('And', array) end
Equivalent to the CloudFormation
template built in function Fn::And
Source
# File lib/cfndsl/jsonable.rb, line 17 def FnBase64(value) Fn.new('Base64', value) end
Equivalent to the CloudFormation
template built in function Fn::Base64
Source
# File lib/cfndsl/jsonable.rb, line 108 def FnCidr(ipblock, count, sizemask) Fn.new('Cidr', [ipblock, count, sizemask]) end
Equivalent to the CloudFormation
template built in function Fn::Cidr
Source
# File lib/cfndsl/jsonable.rb, line 54 def FnEquals(value1, value2) Fn.new('Equals', [value1, value2]) end
Equivalent to the Cloudformation template built in function Fn::Equals
Source
# File lib/cfndsl/jsonable.rb, line 22 def FnFindInMap(map, key, value) Fn.new('FindInMap', [map, key, value]) end
Equivalent to the CloudFormation
template built in function Fn::FindInMap
Source
# File lib/cfndsl/jsonable.rb, line 32 def FnGetAZs(region) Fn.new('GetAZs', region) end
Equivalent to the CloudFormation
template built in function Fn::GetAZs
Source
# File lib/cfndsl/jsonable.rb, line 27 def FnGetAtt(logical_resource, attribute) Fn.new('GetAtt', [logical_resource, attribute], [logical_resource]) end
Equivalent to the CloudFormation
template built in function Fn::GetAtt
Source
# File lib/cfndsl/jsonable.rb, line 59 def FnIf(condition_name, true_value, false_value) Fn.new('If', [condition_name, true_value, false_value], [], [condition_name]) end
Equivalent to the Cloudformation template built in function Fn::If
Source
# File lib/cfndsl/jsonable.rb, line 103 def FnImportValue(value) Fn.new('ImportValue', value) end
Equivalent to the CloudFormation
template built in function Fn::ImportValue
Source
# File lib/cfndsl/jsonable.rb, line 37 def FnJoin(string, array) Fn.new('Join', [string, array]) end
Equivalent to the CloudFormation
template built in function Fn::Join
Source
# File lib/cfndsl/jsonable.rb, line 64 def FnNot(value) if value.is_a?(Array) Fn.new('Not', value) else Fn.new('Not', [value]) end end
Equivalent to the Cloudformation template built in function Fn::Not
Source
# File lib/cfndsl/jsonable.rb, line 73 def FnOr(array) raise 'The array passed to Fn::Or must have at least 2 elements and no more than 10' if !array || array.count < 2 || array.count > 10 Fn.new('Or', array) end
Equivalent to the CloudFormation
template built in function Fn::Or
Source
# File lib/cfndsl/jsonable.rb, line 80 def FnSelect(index, array) Fn.new('Select', [index, array]) end
Equivalent to the CloudFormation
template built in function Fn::Select
Source
# File lib/cfndsl/jsonable.rb, line 42 def FnSplit(string, array) Fn.new('Split', [string, array]) end
Equivalent to the CloudFormation
template built in function Fn::Split
Source
# File lib/cfndsl/jsonable.rb, line 87 def FnSub(string, substitutions = nil) raise ArgumentError, 'The first argument passed to Fn::Sub must be a string' unless string.is_a? String refs = string.scan(FN_SUB_SCANNER).map(&:first).map { |r| r.split('.', 2).first } if substitutions raise ArgumentError, 'The second argument passed to Fn::Sub must be a Hash' unless substitutions.is_a? Hash refs -= substitutions.keys.map(&:to_s) Fn.new('Sub', [string, substitutions], refs) else Fn.new('Sub', string, refs) end end
Source
# File lib/cfndsl/jsonable.rb, line 12 def Ref(value) RefDefinition.new(value) end
Equivalent to the CloudFormation
template built in function Ref